| 摘要 |
PURPOSE:To form an output voltage waveform as a sine wave or a triangular wave by arranging rotary permanent magnets with a said magnets being tilted with respect to a Hall element. CONSTITUTION:A rotary shaft part 1a is provided on the top of a first rotatable yoke 1. At the bottom surface of said yoke 1, slanted surfaces 1b which are tilted in the opposite directions to each other, are formed. The rectangular permanent magnets 2 and 3 which are magnetized in the direction of thickness are fixed to said slanted surfaces 1b, so that the polarities of said magnets are different in the up and down direction. A second yoke 4 is arranged so as to form a right angle with respect to the center of the rotary shaft of the first yoke 1. The Hall element 5 is fixed to the surface of said second yoke which faces the permanent magnets 2 and 3. |
